I've had my Handspring Visor Deluxe for about a week now, and I have to say, I love it. You really can't appreciate how flexible they are until you get one. In the past week, I've used mine to play Scrabble in the car, keep golf scores during a round last weekend, jot down directions to a duplex I may rent, write down computer serial numbers when I was in a lab, take down a list of names the Associate Dean was rattling off to me, and play numerous games of Tetris.
I've noticed that there is now a SpringBoard Module that will act as the ultimate universal remote, that could be very cool. I've gotten my Visor to sync with the University's Netscape Calendar server, as well as my e-mail and contacts from Microsoft Outlook.